hallo! i'm a new user and i'm from italy..so i'm sorry for my bad english..i hope that you understand me..
i' have done the upgrade from mk3 to an mk4 with v27 installed..(the seller sell me it with the software v27 included, so i did not the upgrade to myself)..
the mk4 work but it is slow on startup....when i open the door the bmw logo doesn't appair at the same time i open the dorr but after 20 second and more.. the boot of navi seem so slowly..after logo appair the words: wait please for more second too..the navigation is ok after boot...

what i can do? if i turn off the battery for some minutes the situation can become better? there is a way to reset the mk4 after installation?yesterday it doesn't found the dvd too...i'm sad!!

please help me..can i try too reinstall the v27 software without downgrade to the v26? it will be a good thing?

thanks very much!